ABC is a triangular park with AB = AC = 100 metres. A vertical tower is situated at the mid-point of

Q: JEE Main 2019 Height and Distance: ABC is a triangular park with AB = AC = 100 metres. A vertical tower is situated at the mid-point of...

The correct answer is A. APM BPM ABM AM 2 + MB 2 = (100) 2 ' 18h 2 + 7h 2 = 100 × 100 h 2 = 4 × 100 h = 20

Question

ABC is a triangular park with AB = AC = 100 metres. A vertical tower is situated at the mid-point of BC. If the angles of elevation of the top of the tower at A and B are cot –1 (3 ) and cosec –1 (2 ) respectively, then the height of the tower (in metres) is :

Accepted Answer

APM BPM ABM AM 2 + MB 2 = (100) 2 ' 18h 2 + 7h 2 = 100 × 100 h 2 = 4 × 100 h = 20

Answer

Answer

25

Answer

20

Answer

10

Question

Options

Solution

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